After observing a consistent recovery in SMS delivery to AT&T and T-Mobile, we have verified that this incident is now resolved.

Some consumers in the US are currently unable to authenticate using SMS one-time passwords due to a problem with message delivery on the AT&T and T-Mobile carriers. This affects a consumer's ability to login to the Klarna app and to authenticate 'Pay in 4' purchases over SMS. Existing consumers can login to the Klarna app using email. We are continuing to monitor the status of the affected carriers and will share further updates in due course.